Tilling-machine.



Patented Apr. 10, 1917.

2 SHEETS-SHEET l.

NVENTOR C. H. NICKEE.

TILLING MACHINE.

APPLICATloN FILED Nov. 29. 1912.

WITNESSES we :mums persas cu. pnumumo.. msnmn mn; nv c.

C. H. McKEE.

TILLING MACHINE.

APPLICATION FILED Nov. 29. 1912.

Patented Apr. 10, 1917.

2 SHEETS-SHEET 2.

vCHARLES H. MCKEE, 0F PITTSBURGH, PENNSYLVANIA.

TILLING-IVIACHINE.

Specification of Letters atent.

Patented Apr. 10, 1917.

Application filed November 29, 1912. Serial No. 734,148.

To all whom t may concern Be it known that I, CHARLES H. MGKEE, acitizen of the United States, residing at Pittsburgh, in the county ofAllegheny and State of Pennsylvania, have invented new and usefulImprovements in filling-Machines, of which the following is aspecification.

This invention relates to a mechanical device or machine for tilling theearth, the same being designed as an improvement on the tilling machinedescribed in Letters Patent 942,469, granted to George Spalding,December 7, 1909.

One of the objects of the invention is to provide means whereby aplurality of rotary concaved disks may be mounted in succession on asuitable frame, the disks being so arranged that they will all come inthe line of draft in such manner that neither of them will have thetendency to swing the machine out of true during the plowing operation.A further object is to provide a tilling machine that will be light indraft and readily controlled in its operation.

The invention will be hereinafter fully set forth and particularlypointed out in the claims.

In the accompanying drawings Figure 1 is a side elevation illustratingmy improved tilling machine. Fig. 2 is a plan view thereof. Fig. 3 is adetail view illustrating the operation of the disks.

Referring tothe drawings, 10 designates a frame supported upon front andrear furrow wheels 11, 12, respectively, and upon a land wheel 13. `Frames of diierent patterns or forms may be employed but preferably ametal frame is used, having two principal members 14, 15, the member 14,when the machine is in operation, being carried in an approximatelyhorizontal position, transverse the furrow to be plowed, andsufficiently high to pass over weeds and trash without clogging. Thefront furrow wheel 11 is attached to one end of the member 14, thebackbone member 15 extending rearwardly from the other end of the member14. The said backbone member is inclined downwardly and also isdeiiected laterally to a slight degree. The land wheel 13 is attached tothe backbone member 15 on the side farthest from the front furrow wheel.

vance of the journal 18 is a standard 24 car- I rying the journal forthe front disk 25. Said standard is secured in position by means of abolt 26 passing through a slot of said standard, whereby the standardmay be raised or lowered with respect to the backbone and be rigidly andsecurely held in any adjusted position. It will be noted that the disk25 is supported in a higher plane than the disk 20, and that said disk25 is less in diameter and more dished than the disk 20. That is to saythe disk 25 is not only smaller in diameter than the disk 20 but thecurvature or concavity thereof is much greater. Each disk when in useacts as a revolving gouge and is set to follow in the lead of itscutting edge along the vertical wall at the bottom of its furrow, asnearly as may be, and each disk is capable of cutting a furrow which indepth is equal to onehalf of the diameter of the disk, or nearly so. Itwill be noted that the front disk, because of its greater curvature,will extend more directly across the furrow than the rear disk, and byureason of the greaterv diameter of the rear disk, and the fact that itis less dished than the front one, there is room to set it as close, orcloser to the unplowed ground than the front disk, and yet the same willbe so supported that the eX- tended end of its journal will not rubagainst the wall of the furrow.

Pivoted levers or arms 28, 29, are provided for raising or lowering theframe with respect to the front furrow wheel 11 and the land wheel 13,and means are provided at 22 for adjusting the vertical position of theframe with respect to the rear furrow wheel. When the machine is in useand after a preliminary furrow has been cut, the wheel 11 runs at thefront corner of the frame, along the bottom of the last precedalong andin the furrow made by the ma` chine and immediately behind the rear ordeep cutting disk.

In operation, the journal bearing of the front disk 25 is so adjustedthat the active portion of the cutting edge of said front disk will cuta furrow in a manner similar to the front disk in the Spaldingpatent'above referred to. The rear disk is so arranged that ordinarilythe active portion of its cutting edge will cut to, or near to, the topof the unplowed ground and take a narrow wedge shaped piece olf the wallVof the furrow left bythe front disk, on its land side, as will moreclearly appear in Fig. 3. But at times the rear disk will not cut to thetop of the unplowed ground, or it may take off a strip of the unplowedground, an inch or more in width, depending on the depth to which therear disk cuts and as to how the lfront disk is set, up or down, withrespect to the rear one. By `the active portion of the cutting edge'mean that portion which is for the time being actually in cuttingengagement with the ground.

rl`he advantages of my vimproved tilling machine are readily apparent..It will be particularly observed that the disks are arranged so thatthey all come in the line of dra-ft in such 4'manner that they arenicely balanced with respect to saidv line and neither of 'them willhave the tendency to swing the machine out of true. lt will be furthernoted that by reason of the arrangement of the disks herein describedthe machine 'is very light in draft and readily and easily controlled inoperation. An important advantage also lies in the fact that with the,disks arranged as herein described an excellent seed bed is obtainedfor the reason that the .plowed ground is loosened up to betteradvantage and the top and subsoils completely mixed.

Inthe drawings but two disks are illustrated, Abut it is obvious that bylengthening the backbone one or more additional disks may be mounted insucccssionvthereon by duplicating the standard 2e, each standard beingplaced ahead of the standard for the next successive disk, with eachdisk related to the next following disk in the same manner that thefrontdisk *heretofore described bears to the rear disk.

lWhile I prefer to employ disks of different diameters and disheddifferently, as above stated, disks of like diameters and dished 'likeamounts may be used successfully,gespecially in yloose earth, whenarranged in accordance with the requirements of my invention-that is tosay, so that they will all come in the line of draft and not have atendency to swing the machine out of its proper path of forward motionwhen in operation.

Having thus explained the nature of my invention and described anoperative manner of constructing and using the same, although withoutattempting -to set forth all of the forms in which it may be made or allof the forms of its use, what I claim is l. A tilling machine having aplurality of rotary disks mounted in succession, with each disk inadvance of, higher than, and of less diameter than the next followingdisk, each disk having the active portion of its cutting edge as closeto the unplowed ground as the active portion of the cutting edge of thenext preceding disk or closer.

2. A tilling 4machine having a -pl-uralityof independentlysupported'rotary disks mounted inlsuc'cession, with each ldisk inadvance of, higher, of less diameter, andim'ore dished than -the nextsucceeding disk, whereby the larger disk may be set as close to thelunplowed ground as the smaller disk, or closer.

3. A 'tilling machine havingfa :plurality 'of independently supportedrotary disks mounted in vsuccession with the support of each disk inadvance of, higher than, and` partly to theland side of its :nextfollowing disk, each disk being more dished Ithan thenext followingdisk, each disk having the active portion of yits cutting edge asclosepto the unplowed ground as the active jportionof the cutting edgeof the next `preceding disk or closer. Y Y' Y el. A tilling machinehaving a plurality of independently supported rotary disksmounted insuccession with the support of each disk in advance of, higher, andpartly tothe land side of the next following disk, each disk being ofless diameter than the -next following disk, wherebyvthe larger disk maybe set as close to the unplowed ground aslthe smaller disk, or closer.

5. A tilling machine having a plurality of independently supportedrotaryldisks mounted in succession with the support of each disk inadvance of, `higher than, and partly to the land side of the nextfollowing disk, each disk being of smaller diameter and more dished thanthe next Afollowing disk, whereby the larger disk lmay be set afs -closeto the unplowediground as the-smaller disk, or closer. y l 6. A tillingmachine provided with two disks mounted one in the rear ofthe other, therear disk being supported in a lower plane than the leading disk andhaving the active portion of its cutting edge closer to the land sidethan the active portion of the cutting edge of the `leading diskwherebyfthe two disks coperate to plow a singlefurrow in one operation.v

s 7. A tilling machine provided with two disks mounted vone in the rearof the other, the rear disk being supported ina lower plane than `theleading Vdiskand having the active 4portion 0f its cutting' edgercloserto the land side than the active 'portion ofthe cutting edge of theleading disk, the active active portion of its cutting edge extending 10edge of the rear disk also extending to the to the top of the unplowedground.

top of the unplowed ground, said disks co- In testimony whereof I havehereunto set operating t0 plow a single furrow in one my hand inpresence of two subscribing witoperation. nesses.

8. A tilling machine provided with two CHARLES H. MCKEE. disks mountedone in the rear of the other, Witnesses: the rear disk being supportedin a lower HARRY E. SHELDON, plane than the leading disk and having theA. H. MCNAMEE.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

